Fix OOM bug 3976.

test/mjsunit/regress/regress-3976.js

-// Copyright 2009 the V8 project authors. All rights reserved.
+// Copyright 2015 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
 //       with the distribution.
 //     * Neither the name of Google Inc. nor the names of its
 //       contributors may be used to endorse or promote products derived
 //       from this software without specific prior written permission.
 //
 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-// See: http://code.google.com/p/v8/issues/detail?id=491
-// This should not hit any asserts in debug mode on ARM.
+// Flags: --max-old-space-size=60
 
-function function_with_n_strings(n) {
-  var source = '(function f(){';
-  for (var i = 0; i < n; i++) {
-    if (i != 0) source += ';';
-    source += '"x"';
-  }
-  source += '})()';
-  eval(source);
+table = [];
+
+for (var i = 0; i < 32; i++) {
+ table[i] = String.fromCharCode(i + 0x410);
 }
 
-var i;
-for (i = 500; i < 600; i++) {
-  function_with_n_strings(i);
+
+var random = (function() {
+  var seed = 10;
+  return function() {
+    seed = (seed * 1009) % 8831;
+    return seed;
+  };
+})();
+
+
+function key(length) {
+  var s = "";
+  for (var i = 0; i < length; i++) {
+    s += table[random() % 32];
+  }
+  return '"' + s + '"';
 }
-for (i = 1100; i < 1200; i++) {
-  function_with_n_strings(i);
+
+
+function value() {
+  return '[{' + '"field1" : ' + random() + ', "field2" : ' + random() + '}]';
 }
+
+
+function generate(n) {
+  var s = '{';
+  for (var i = 0; i < n; i++) {
+     if (i > 0) s += ', ';
+     s += key(random() % 10 + 7);
+     s += ':';
+     s += value();
+  }
+  s += '}';
+  return s;
+}
+
+
+print("generating");
+
+var str = generate(50000);
+
+print("parsing "  + str.length);
+JSON.parse(str);
+
+print("done");